Auth bypass in Dolibarr
CVE-2026-71509
Dolibarr before 24.0.0 contains an improper authorization vulnerability in the expense report REST API update endpoint that allows authenticated attackers with expense-creation rights to bypass the approval workflow by directly setting approval status and approver identity fields. Attackers can manipulate workflow state fields through the REST API to advance expense reports to approved or closed status without possessing the dedicated approval right, while also creating forensic inconsistencies in audit records due to missing approval timestamps.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
Weakness classification (CWE)
References
- CodeAnt AI Blog (technical-description, exploit)
- Patch Commit (patch)
- Dolibarr 24.0.0 Release Notes (release-notes)
- www.vulncheck.com/advisories/dolibarr-expense-report-rest-api-improper-authoriz… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-71509?
- CVE-2026-71509 is a medium-severity vulnerability in Dolibarr, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-08-24.
- How severe is CVE-2026-71509?
- Medium severity. CVSS v3 base score is 6.5 out of 10.